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Finding the Fourth Proportional to 442,961.10, 664,441.65 and 440,336.70

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Solution

The fourth proportional to 442,961.10, 664,441.65 and 440,336.70 is: 660,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,961.10 : 664,441.65 = 440,336.70 : x
  2. Step 2: Convert to fraction form
    442,961.10/664,441.65 = 440,336.70/x
  3. Step 3: Cross multiply
    442,961.10x = 664,441.65 × 440,336.70
  4. Step 4: Simplify right side
    442,961.10x = 292,578,043,503.56
  5. Step 5: Solve for x
    x = 292,578,043,503.56/442,961.10
  6. Step 6: Final answer
    x = 660,505.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.